John A. Tyrell
68Patents
13h-index
36Co-inventors
84Inventor score
Filing activity: Feb 25, 1981 → Jun 30, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5637660A | Polymerization of .alpha.-olefins with transition metal catalysts based on bidentate ligands containing pyridine or quinoline moiety | Emerging Cross-Sectional Technologies | 209 | Expired |
| US6232260A | Single-site catalysts for olefin polymerization | Emerging Cross-Sectional Technologies | 69 | Expired |
| US5756611A | .alpha.-olefin polymerization catalysts | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4532290A | Stabilized polycarbonate-polyester compositions | Chemistry; Metallurgy | 53 | Expired |
| US4556688A | Thermoplastic polyetherimide ester elastomers | Chemistry; Metallurgy | 41 | Expired |
| US4569973A | Copolyetheresters from caprolactone | Chemistry; Metallurgy | 30 | Expired |
| US6376629B2 | Single-site catalysts for olefin polymerization | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4732948A | Solid phase polycondensation process for the production of high molecular weight polyetherimide ester polymers | Chemistry; Metallurgy | 19 | Expired |
| US4760112A | Thermoplastic polyetherimide ester polymers exhibiting high flexural modulus | Chemistry; Metallurgy | 18 | Expired |
| US4778855A | Thermoplastic molding compositions exhibiting improved melt flow properties | Chemistry; Metallurgy | 17 | Expired |
| US4393190A | Carbonate copolymers prepared from imide reactants | Chemistry; Metallurgy | 15 | Expired |
| US5554684A | Forming polyimide coating by screen printing | Electricity | 15 | Expired |
| US4740564A | Thermoplastic polyetherimide esters | Chemistry; Metallurgy | 13 | Expired |
| US5744417A | Supported catalyst | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4992506A | Copolyetherester elastomeric compositions | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5015698A | Polyphenylene ether-polyester copolymers, precursors therefor, compositions containing said copolymers, and methods for their preparation | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4740563A | Crosslinked polyetherimide ester polymers | Chemistry; Metallurgy | 10 | Expired |
| US4496693A | Compatibilization of polycarbonate blends | Chemistry; Metallurgy | 10 | Expired |
| US5747404A | Polysiloxane supported metallocene catalysts | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6114270A | Polymerization-stable anionic ancillary ligand containing alkylimido catalysts and method of using the same | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5112915A | Copolyetherester elastomeric compositions | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4535108A | Flame retardant polycarbonate | Chemistry; Metallurgy | 8 | Expired |
| US4743637A | Flame retardant compounds and thermoplastic compositions containing the same | Chemistry; Metallurgy | 8 | Expired |
| US4714754A | Polyetherimide esters | Chemistry; Metallurgy | 7 | Expired |
| US5317049A | Polyimidesiloxane solution and method of coating substrates | Emerging Cross-Sectional Technologies | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.